Produced by Chris Curnow, Joseph R. Hauser, Joseph Cooper and the Online Distributed Proofreading Team at https://www.pgdp.net UNIVERSITY OF KANSAS PUBLICATIONS MUSEUM OF NATURAL HISTORY Volume 7, No. 8, pp. 507-512 July 23, 1954 A New Subspecies of Bat (Myotis velifer) from Southeastern California and Arizona BY TERRY A. VAUGHAN UNIVERSITY OF KANSAS LAWRENCE 1954 UNIVERSITY OR KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY Editors: E. Raymond Hall, Chairman, A. Byron Leonard, Robert W. Wilson Volume 7, No. 8, pp. 507-512 Published July 23, 1954 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY FERD VOILAND. JR., STATE PRINTER TOPEKA, KANSAS 1954 25-3727 A New Subspecies of Bat (_Myotis velifer_) from Southeastern California and Arizona BY TERRY A. VAUGHAN The first specimens of _Myotis velifer_ from California were taken in 1909 by C. L. Camp at Needles, San Bernardino County (Grinnell, Univ. California Publ. Zool., 12:266, March 20, 1914), and subsequently this bat was recorded from farther south in the lower Colorado River Valley at the Riverside Mountains, Riverside County (Stager, Jour. Mamm., 20:226, May 14, 1939). West of the Rocky Mountains the species is known to occur also in at least the southern two-thirds of Arizona, southwestern New Mexico, and is recorded from Thistle Valley, Utah, on the basis of two young specimens in alcohol (Miller and Allen, Bull. U. S. Nat. Mus., 144:87, May 25, 1928). Through comparisons made possible by the acquisition, in the last few years, of mammals from many parts of Mexico by the Museum of Natural History of the University of Kansas, it became evident that _Myotis velifer_ in California and Arizona was an heretofore unnamed subspecies. It may be known as =Myotis velifer brevis= new subspecies _Myotis velifer_, Grinnell, Univ. California Publ. Zool., 12:266, March 20, 1914; Grinnell, H. W., Univ. California Publ. Zool., 12:259, January 31, 1918. _Myotis velifer velifer_, Miller and Allen, Bull. U. S. Nat. Mus., 144:87, May 25, 1928; Burt, Jour. Mamm., 14:115, May 15, 1933; Burt, Misc. Publ. Mus. Zool. Univ. Michigan, 39:22, February 14, 1938; Hatfield, Bull. Chicago Acad. Sci., 6:146, January 12, 1942. _Type._--Male, adult, No. 22631, Museum of Natural History, University of Kansas; Madera Canyon, 5,000 ft., Santa Rita Mountains, Pima County, Arizona; obtained on March 12, 1948, by J. R. Alcorn; original number 5571. _Range._--Lower Colorado River Valley in California and Arizona, through southern two-thirds of Arizona, southwestern New Mexico, and northern Sonora; southern limits of range unknown.